42566265 has 24 divisors (see below), whose sum is σ = 84322368. Its totient is φ = 19458720.

The previous prime is 42566257. The next prime is 42566267. The reversal of 42566265 is 56266524.

42566265 is a `hidden beast` number, since 4 + 25 + 6 + 626 + 5 = 666.

It is not a de Polignac number, because 42566265 - 2³ = 42566257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42566267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67251 + ... + 67880.

It is an arithmetic number, because the mean of its divisors is an integer number (3513432).

Almost surely, 2^42566265 is an apocalyptic number.

42566265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42566265 is a deficient number, since it is larger than the sum of its proper divisors (41756103).

42566265 is a wasteful number, since it uses less digits than its factorization.

42566265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135149 (or 135146 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 42566265 is about 6524.2827191960. The cubic root of 42566265 is about 349.1578801991.

The spelling of 42566265 in words is "forty-two million, five hundred sixty-six thousand, two hundred sixty-five".